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FRANCIS A. STERRY, OF CANTON, MASSACHUSETTS.

Letters Patent No. 71,809, elated .December 3, 1867.

IMPROVEMENT IN SPINDLE-BOLSTER.

@the Stimme nicht tu in tlgese trttrr gatrnt aut making part nt the arme.

T0 ALL WHOM 1T MAY CONCERN:

Be it known that I, vFRANCIS A. STERRY, of Canton, in the county of Norfolk, and State of Massachusetts, have invented a new and useful Improvement in Spindle-Bolster; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, I reference being had tothe accompanying drawings, forming part of this specification. i 5 This invention relates to the manner in which the spindle of a cotton-spinning frame is lubricated in tho i bolster; and it consists in forming a-n annular recess in the top' part of the bolster, in which is placed an absorbent for the oil, and also in cutting slits through tbc central portion of the bolster, through which the l lubricating-oil passes to the spindle, as will be hereinafter described. l Figure 1 'represents a vertical section of the spindle passing through the bolster, and of the bolster attached to the rail of the spinning-frame, it being through the line :s x of iig. 2. i

Figure 2 represents a top view of the bolster nith the cap gif.

Simihtr letters indicate corresponding parts in the drawing.

A is the spindle; B is the bolster; C is the spinning-frame rail; D is the cap of' thc holster. As will be seen in the drawing, the upper portion of the bolster, which sets upon the rail, is recessed by turning out an' annular groove, a, leaving a central portion immediately around the spindle. This central portion is slit or divided into two or more parts, the slits extending from the top of the piu-t to its base, or nearly so. 'Thev nbsorbentor 4capillary 'substance which is vplaced in the reces'sza, does not4 entirely ill the recess, but n. space is left around. the outside of it for-the oil. The absorbent is-.aI soft, fibrous substance, cylindrical in shape, or cut out in ringsfwhich fit tightly over the centra-l part, so that the oil is strained through it before it .reaches the spindle. The' cap D screws into or on to the bolster, with a flange aroundit, as seen 'in the dra\ving,and tho oiv of oil through the absorbent and the slits is governed by its position. By unscrwingit the air enters and 4 occasions the oil to ow faster than when it is screwed tightly down on to the bolster. When thusscrewed down it makes c. tight joint, entirely excluding the air. By adjusting it as described, it acts the part of a valve, increasing or diminishing the quantity of oil used on the spindle. i

What I claim as new, and desire to secure by Letters Patent, 'is-f 4 1. The absorbent or strainer in the bolster B, consisting of rings fitting snugly around the slotted central part of the bolster, and placed in the annular recess a, and cf less diameter than said recess, whereby the lubricant surrounds the circumference'only of the absorbent and is strained through said absorbent to the spindle, as hereinv shown and described for the purpose specified.

2. In combination `with the absorbent or strainer, as described,` placed in 4the recess a,lthe screw-cup 'D fitting air-tight upon the top of the bolster, whereby a valve is produced, which, by screwing up or unser-owing, regulates the quantity of oil to be strained through the absorbentz to the spindle, as herein set forth forthc purpose specified.

FRANCIS A. STERRY.

Witnesses:

SAMUEL B. NoYns, HIRAM J. Brunes. 

